Naoto went with his classmates to the beach on a trip arranged by his friend. His goal was to get closer to Ishihara-san, the girl who is universally adored by his classmates. Shortly after arriving at the inn, Naoto and Ishihara-san went to get some lunch, and they had a good time together. However, everything changed when a man rumored to be Ishihara-san's ex-boyfriend showed up! The relationships between Naoto, Ishihara-san, and Satsuki have started to crumble apart. Naoto's everyday life just won't be the same after this trip!